文件列表見:rust 移動端跨平台複雜圖形渲染專案開發系列總結(目錄)
2018.12.23 更新cargo workspace feature編譯的命令執行路徑問題cargo用於組織rust專案,比直接用rustc編譯多個原始檔更方便。本文件介紹我們開發過程中用到的cargo功能與小技巧。完整資訊可閱讀the cargo book。
rev表示要使用的commit id,可簡寫成前7個字元,因為git commit id前7個字元可算出完整的41個字元值。
[dependencies]
gfx-hal =
// 或者寫成多行
[dependencies.gfx-hal]
git = ""
version = "0.1.0"
rev = "bd7f058efe78d7626a1cc6fbc0c1d3702fb6d2e7"
複製**
git倉庫位址需要支援https訪問,如果是http需要額外配置,比較麻煩。
[dependencies]
hello_utils =
複製**
path是相對於本專案cargo.toml檔案的被依賴專案的cargo.toml的位置,填錯將找不到檔案,且編譯報錯。詳細資訊參考the cargo book/specifying-dependencies
/// open the physical device with `count` queues from some active queue family. the family is
/// the first that both provides the capability `c`, supports at least `count` queues, and for
/// which `selector` returns true.
////// # examples
////// ```no_run
/// # extern crate gfx_backend_empty as empty;
/// # extern crate gfx_hal as hal;
/// use hal::general;
/// # fn main()
/// ```
////// # return
////// returns the same errors as `open` and `initializationfailed` if no suitable
/// queue family could be found.
pubfn
open_with
( &self,
count: usize,
selector: f,
) -> result
<(b::device, queuegroup), devicecreationerror>
where
f: fn(&b::queuefamily) -> bool,
c: capability,
).next();
let priorities = vec![1.0; count];
let (id, families) = match requested_family ;
let gpu = self.physical_device.open(&families)?;
ok((device, queues.take(id).unwrap()))
}複製**
前面examples
**可以用rust-skeptic進行測試,具體做法可閱讀rust-skeptic文件。
對於cargo workspace下有多個project的情況,如果對其中乙個project進行feature編譯執行或做單元測試,一定要在此專案的cargo.toml或src內執行,否則cargo會忽悠cargo test或cargo build --features=your_feature所指定的feature,這是個很小卻容易踩中的坑。
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